<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>选择服务类型</title>
    <script type="text/javascript">
        function free() {
            window.location.href="free";
        }

        function gotoPay() {
            window.location.href="gotoPay"
        }
    </script>
</head>
<body>
<button onclick="free();">免费体验</button>
<button onclick="gotoPay();">付费体验更多</button>
</body>
</html>